PDF malware analysis — malicious · a49f4170cdbb2818

MALICIOUS

PDF

11.0 KB

MD5: 6878fd4c811f0efdead1596959352692 SHA-1: 6e3a790bde269fd9c528961a2bf0d63a40063dc7 SHA-256: a49f4170cdbb281830c302d6f05278005f9d67824704824a215ff79b4ff5d817

64 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes an eval() call, indicating an attempt to execute arbitrary code. This is a common technique for exploiting vulnerabilities in PDF readers. The JavaScript is obfuscated, but the presence of eval() strongly suggests a malicious intent to download and execute a secondary payload or exploit a known vulnerability within the PDF viewer. No specific family could be identified due to the generic nature of the exploit.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objstm_0024_00.bin` `3687cf82bd487745fbca335d5c37821db5ee2839e39baf479566b0884e625555`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	380 bytes

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